后台代码如下:
public class chronometerTest extends Activity { @Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final Chronometer ch=(Chronometer)findViewById(R.id.chronometer);
Button btn=(Button)findViewById(R.id.btn);
ch.setFormat("计时:%s");
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
ch.setBase(SystemClock.elapsedRealtime());
ch.start();
}
});
ch.setOnChronometerTickListener(new OnChronometerTickListener() {
@Override
public void onChronometerTick(Chronometer chronometer) {
if(SystemClock.elapsedRealtime()-ch.getBase() >20*1000){
ch.stop();
}
}
});
}
}前台代码如下:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:gravity="center_horizontal"
><!--
<AnalogClock
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<DigitalClock
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="14pt"
/>
-->
<Chronometer
android:id="@+id/chronometer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<Button
android:id="@+id/btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="开始"
/>
</LinearLayout>
刚学到这个界面组件,也看了网上一些例子的代码,为啥我的计时器就没反应,一直显示着00:00
求大神指教androidchronometer
public class chronometerTest extends Activity { @Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final Chronometer ch=(Chronometer)findViewById(R.id.chronometer);
Button btn=(Button)findViewById(R.id.btn);
ch.setFormat("计时:%s");
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
ch.setBase(SystemClock.elapsedRealtime());
ch.start();
}
});
ch.setOnChronometerTickListener(new OnChronometerTickListener() {
@Override
public void onChronometerTick(Chronometer chronometer) {
if(SystemClock.elapsedRealtime()-ch.getBase() >20*1000){
ch.stop();
}
}
});
}
}前台代码如下:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:gravity="center_horizontal"
><!--
<AnalogClock
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<DigitalClock
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="14pt"
/>
-->
<Chronometer
android:id="@+id/chronometer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<Button
android:id="@+id/btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="开始"
/>
</LinearLayout>
刚学到这个界面组件,也看了网上一些例子的代码,为啥我的计时器就没反应,一直显示着00:00
求大神指教androidchronometer
解决方案 »
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